Stabilizing fixture and construction method for through-type plane trusses

Abstract

A stabilizing fixture and construction method for a bottom-supported plane truss includes a first hinged support symmetrically fixed to either side of the truss's upper chord, a first and second clamps fixed to the columns, and a triangular support member connecting the first hinged support, the first clamp, and the second clamp. The triangular support member comprises three rods connected at one end to each other, with the other ends of the three rods articulated to the first hinged support, the first clamp, and the second clamp, forming a triangular support structure. This invention temporarily secures the plane truss, reducing the time it takes to position the lifting machinery, improving installation efficiency, and lowering construction costs.

Description

Technical Field

[0001] The invention relates to a stabilizing tool for a bottom-supported plane truss and a construction method. Background Art

[0002] With the continuous acceleration of modern industrialization and urbanization, the development of architecture is moving towards larger spans and more complex shapes. More and more large-span and large-space buildings such as factories, gymnasiums, and exhibition halls need to be built. Truss structures are widely used in these large-span and large-space buildings. The existing truss forms are rich and diverse, and the construction ideas and methods are also diverse. When installing the "bottom-supported spherical hinge plane truss", since the bottom of the plane truss is supported on the top of the column through the spherical hinge support, the plane truss and the top of the column are movably connected. Therefore, during the installation process, the plane truss is usually first lifted to the corresponding position by a crane, and the secondary beam or secondary truss is connected to the plane truss without loosening the hook. After the secondary beam or secondary truss is installed with the plane truss to form a stable structure, the crane is loosened from the plane truss to lift the next truss. However, this method has obvious disadvantages: 1) The crane needs to wait until the secondary beam or secondary truss is installed before unhooking, which occupies the crane for a long time, resulting in low installation efficiency and high construction costs; 2) The plane truss and the secondary beam or secondary truss are constructed simultaneously, and the machines are concentrated and cross-operated, which poses a major safety hazard. Summary of the Invention

[0003] To achieve the above objectives, the present invention proposes a stabilizing tool and construction method for a bottom-supported plane truss, which can temporarily fix the plane truss, reduce the time for lifting machinery to be put into position, improve installation efficiency, and reduce engineering construction costs.

[0004] The present invention relates to a stabilizing tooling for a bottom-supported plane truss, comprising a first hinged support symmetrically fixed on both sides of the upper chord of the truss, a first hoop and a second hoop fixed on a column, and a triangular support member connecting the first hinged support, the first hoop and the second hoop. The triangular support member is three rods connected to each other at one end, and the other ends of the three rods are respectively hinged to the first hinged support, the first hoop and the second hoop to form a triangular support structure.

[0005] By adopting the above structure, a temporary support structure is formed by using a triangular support structure and a clamp to support both sides of the truss. In this way, when the temporary support structure is established, the crane can release the hook and ensure the stability of the truss on the column through the temporary support structure, thereby improving the utilization efficiency of the crane and facilitating the subsequent installation of secondary beams or secondary trusses.

[0006] In this embodiment, the first hoop is arranged on the upper side of the second hoop, and a second articulated support and a third articulated support are respectively provided on both sides of the first hoop and the second hoop at positions corresponding to the first articulated support.

[0007] In this embodiment, the triangular support members are symmetrically arranged on both sides of the truss and include an upper oblique support rod, an intermediate support rod, and a lower oblique support rod. One end of each of the upper oblique support rod, the intermediate support rod, and the lower oblique support rod are hinged together via a pin. The other end of the upper oblique support rod is hinged to a first hinge support, the other end of the intermediate support rod is hinged to a second hinge support, and the other end of the lower oblique support rod is hinged to a third hinge support. One end of the upper oblique support rod, the intermediate support rod, and the lower oblique support rod can rotate about the pin, and the other ends can rotate about the first, second, and third hinge supports, respectively. The first clamp and the second clamp provide reliable fulcrums for the middle support rod and the lower oblique support rod respectively. The middle support rod and the lower oblique support rod form a lower stable structure with the column through the first and second clamps. The truss is connected to the lower stable structure through the upper oblique support rod to achieve the purpose of fixing the truss. The triangular support member can be formulated with triangular bracket rods of different fixed lengths. By combining upper oblique support rods, middle support rods and lower oblique support rods of different lengths and specifications, and adjusting the spacing between the clamps at the same time, the device can adapt to trusses of different sizes.

[0008] In this embodiment, the upper oblique support rod, the middle support rod and the lower oblique support rod are all detachably connected to the first, second and third hinged supports.

[0009] In this embodiment, the slenderness ratio of the upper oblique support rod, the middle support rod and the lower oblique support rod is less than 200.

[0010] In this embodiment, the first hoop and the second hoop have the same structure and both include two semicircular hoop plates. The inner diameter of the semicircular hoop plates matches the size of the column. The inner wall of the semicircular hoop plates is provided with an anti-slip layer. Both ends of the semicircular hoop plates are provided with connecting ears, and the connecting ears are provided with multiple bolt holes. The two ends of the two semicircular hoop plates are locked by hoop bolts passing through the bolt holes.

[0011] In this embodiment, a reinforcing rib is further provided between the connecting ear and the semicircular hoop plate to increase the strength of the connecting ear.

[0012] The present invention also includes a bottom-through plane truss construction method, which utilizes the above-mentioned bottom-through plane truss stabilizing tooling, specifically comprising the following steps:

[0013] a. Selection of rods:

[0014] Determine the length L1 of the upper oblique support rod, the length L2 of the middle support rod, and the length L3 of the lower oblique support rod according to the height H1 of the truss. The selection principle is that the length of the upper oblique support rod and the lower oblique support rod are both 1.2 to 1.6 times the height H1 of the truss, and the length of the middle support rod matches the height of the truss;

[0015] b. Selection of the clamp position:

[0016] Set the top of the first clamp flush with the top of the column, and determine the distance H2 between the first clamp and the second clamp based on the length L1 of the upper oblique support rod, the length L2 of the middle support rod, the length L3 of the lower oblique support rod, and the horizontal distance L4 between the first hinged support on the truss and the second hinged support of the first clamp;

[0017] c. Installation of clamp:

[0018] Install the first clamp and the second clamp at the corresponding positions of the column;

[0019] d. Installation of the middle support rod and the lower inclined support rod:

[0020] Use the pin to hinge the middle support rod to one end of the lower oblique support rod, hinge the other end of the middle support rod to the first clamp, and hinge the other end of the lower oblique support rod to the second clamp in sequence;

[0021] e. Hoisting the truss into place:

[0022] Lift the truss so that it is supported on the top of the column through the ball joint support and the lifting wire rope bears the load;

[0023] f. Installation of the upper inclined support rod:

[0024] One end of the upper oblique support rod is hinged to the first hinged support on the truss, and the other end is hinged to the hinged end of the middle support rod and the lower oblique support rod;

[0025] g. Unloading hoisting wire rope;

[0026] h. Uninstallation of reinforcement device:

[0027] After the main structure is installed, remove the truss and the upper oblique support rod, the first hoop and the middle support rod, the second hoop and the lower oblique support rod in sequence, and finally remove the first hoop and the second hoop.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. This device provides out-of-plane support for the truss after it is hoisted into place, which can prevent the truss from tipping over after it is hoisted into place.

[0030] 2. Greatly reduce the crane occupancy time during truss installation, facilitate the subsequent construction of secondary beams or secondary trusses, and improve installation efficiency.

[0031] 3. This device is used for temporary fixation, is flexible to operate, detachable, can be reused, and is economical and practical.

[0032] In summary, this device can solve the stability problem of the plane truss during installation, reduce the time for lifting machinery to be in place, and at the same time effectively avoid the safety problems of concentrated and cross-operation of lifting machinery, improve installation efficiency, and the device is detachable, flexible to use, and reusable, thereby reducing engineering construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A perspective view of a planar truss supported on a column according to the present invention;

[0034] Figure 2 It is a front view of the present invention in which a plane truss is supported on a column;

[0035] Figure 3 A perspective view of the present invention installed on a column;

[0036] Figure 4 This is a schematic diagram of the assembly of the triangular support member of the present invention;

[0037] Figure 5 The construction process of the present invention Figure 1 ;

[0038] Figure 6 The construction process of the present invention Figure 2 ;

[0039] Figure 7 The construction process of the present invention Figure 3 .

[0040] Among them: 1. First clamp; 2. Second clamp; 3. Middle support rod; 4. Upper oblique support rod; 5. Lower oblique support rod; 61. First hinged support; 62. Second hinged support; 63. Third hinged support; 7. Connecting piece; 71. Connecting ear; 72. Clamp bolt; 73. Reinforcement rib; 8. Column; 9. Truss; 10. Ball joint support. DETAILED DESCRIPTION

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0042] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] like Figures 1 to 4 As shown, the present invention provides a stabilizing fixture for a bottom-supported plane truss, comprising a first hinged support 61 symmetrically fixed on both sides of the upper chord of the truss 9, a first clamp 1 and a second clamp 2 fixed on the column 8, and a triangular support member that supports and fixes the first hinged support 61 on the first clamp 1 and the second clamp 2.

[0044] The first hoop 1 is arranged on the upper side of the second hoop 2. A second hinged support 62 and a third hinged support 63 are respectively arranged on both sides of the first hoop 1 and the second hoop 2 at positions corresponding to the first hinged support 61.

[0045] The triangular support members are symmetrically arranged on both sides of the truss 9, and the triangular support members include an upper oblique support rod 4, an intermediate support rod 3 and a lower oblique support rod 5. One ends of the upper oblique support rod 4, the intermediate support rod 3 and the lower oblique support rod 5 are hinged together by a pin shaft, and the other end of the upper oblique support rod 4 is hinged on the first hinge support 61, the other end of the intermediate support rod 3 is hinged on the second hinge support 62, and the other end of the lower oblique support rod 5 is hinged on the third hinge support 63; one end of the upper oblique support rod 4, the intermediate support rod 3 and the lower oblique support rod 5 can rotate around the pin shaft, and the other ends can rotate around the first, second and third hinge supports respectively;

[0046] The upper oblique support rod 4, the middle support rod 3 and the lower oblique support rod 5 are all detachably connected to the first, second and third hinged supports, and the upper oblique support rod 4, the middle support rod 3 and the lower oblique support rod 5 are all located in the same plane, and the slenderness ratio of the upper oblique support rod 4, the middle support rod 3 and the lower oblique support rod 5 is less than 200. The first clamp 1 and the second clamp 2 provide reliable fulcrums for the middle support rod 3 and the lower oblique support rod 5 respectively. The middle support rod 3 and the lower oblique support rod 5 form a lower stable structure with the column 8 through the first and second clamps. The truss 9 is connected to the lower stable structure through the upper oblique support rod 4 to achieve the purpose of fixing the truss 9. The triangular support member can formulate triangular bracket rods of different fixed length specifications. By combining the upper oblique support rod 4, the middle support rod 3 and the lower oblique support rod 5 of different length specifications, and adjusting the spacing between the clamps at the same time, the device can adapt to trusses 9 of different sizes.

[0047] The first hoop 1 and the second hoop 2 have the same structure and both include two semicircular hoop plates. The inner diameter of the semicircular hoop plate matches the size of the column 8. The inner wall of the semicircular hoop plate is provided with an anti-slip layer. Both ends of the semicircular hoop plate are provided with connecting ears 71. The connecting ears 71 are provided with multiple bolt holes. The two ends of the two semicircular hoop plates are locked by hoop bolts 72 passing through the bolt holes. A reinforcing rib 73 is also provided between the connecting ear 71 and the semicircular hoop plate. The reinforcing rib 73 improves the strength of the connecting ear 71.

[0048] like Figures 5 to 7As shown, the present invention is applicable to bottom-through plane trusses, and the process steps in actual construction are as follows:

[0049] Step 1: Selection of rods:

[0050] like Figure 2 As shown, the length L1 of the upper oblique support rod 4, the length L2 of the middle support rod 3, and the length L3 of the lower oblique support rod 5 are determined according to the height of the truss 9. The selection principle is that the lengths of the upper oblique support rod 4 and the lower oblique support rod 5 are both 1.2 to 1.6 times the height H1 of the truss 9, and the optimal length is 1.5 times. The length of the middle support rod 3 matches the height of the truss 9.

[0051] Step 2: Select the position of the clamp:

[0052] like Figure 3 As shown, the position of the first hoop 1 is determined by design, and the distance H2 between the first hoop 1 and the second hoop 2 is determined by lofting according to the upper oblique support rod 4L1, the middle support rod 3L2, the lower oblique support rod 5L3, and the distance L4 between the first hinged support 61 of the truss 9 and the second hinged support 62 of the first hoop 1;

[0053] Step 3: Installation of clamps:

[0054] like Figure 5 As shown, according to the determined clamp position, the first clamp 1 and the second clamp 2 are installed at the corresponding positions of the column 8;

[0055] Step 4: Install the middle support rod 3 and the lower oblique support rod 5:

[0056] like Figure 6 As shown, the middle support rod 3 and the lower oblique support rod 5, the middle support rod 3 and the first clamp 1, and the lower oblique support rod 5 and the second clamp 2 are connected to each other in sequence by pins to form a lower stable structure.

[0057] Step 5: Hoisting truss 9 into place:

[0058] The truss 9 is hoisted so that the truss 9 is supported on the top of the column 8 through the ball joint support 10. In this state, the hoisting wire rope bears the load;

[0059] Step 6: Install the upper inclined support rod 4:

[0060] After the truss 9 is hoisted into place, the upper oblique support rod 4 is installed to connect the "lower stabilizing structure" to the side of the truss 9. The reinforcement device is installed. In this state, the truss 9 has lateral constraints.

[0061] Step 7: Unloading the lifting wire rope:

[0062] The reinforcement device has been installed, the outside of truss 9 has been stabilized, and the lifting wire rope has been unloaded.

[0063] Step 8: Uninstall the reinforcement device:

[0064] After the main structure is installed, remove the truss 9 and the upper oblique support rod 4, the first clamp 1 and the middle support rod 3, the second clamp 2 and the lower oblique support rod 5 in sequence, and finally remove the first clamp 1 and the second clamp 2, and reassemble the corresponding components to the position of other trusses 9 to be installed. Follow the above steps to complete the subsequent operations.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A stabilizing fixture for a through-type plane truss, characterized by: The truss comprises a first hinged support symmetrically fixed on both sides of the upper chord of the truss, a first hoop and a second hoop fixed on the column, and a triangular support connecting the first hinged support, the first hoop and the second hoop. The triangular support is three rods connected to each other at one end, and the other ends of the three rods are respectively hinged to the first hinged support, the first hoop and the second hoop to form a triangular support structure. The first hoop is arranged on the upper side of the second hoop, and a second hinged support and a third hinged support are respectively arranged on both sides of the first hoop and the second hoop at positions corresponding to the first hinged support. The triangular support is symmetrical. Arranged on both sides of the truss, the triangular support member includes an upper oblique support rod, an intermediate support rod and a lower oblique support rod. One end of the upper oblique support rod, the intermediate support rod and the lower oblique support rod are hinged together by a pin shaft, the other end of the upper oblique support rod is hinged on the first hinge support, the other end of the intermediate support rod is hinged on the second hinge support, and the other end of the lower oblique support rod is hinged on the third hinge support. The upper oblique support rod, the intermediate support rod and the lower oblique support rod are all detachably connected to the first, second and third hinge supports, and the slenderness ratio of the upper oblique support rod, the intermediate support rod and the lower oblique support rod is less than 200.

2. The stabilizing fixture for a through-type plane truss according to claim 1, characterized in that: The first hoop and the second hoop have the same structure and both include two semicircular hoop plates. The inner diameter of the semicircular hoop plates matches the size of the column. The inner wall of the semicircular hoop plates is provided with an anti-slip layer. Both ends of the semicircular hoop plates are provided with connecting ears, and the connecting ears are provided with multiple bolt holes. The two ends of the two semicircular hoop plates are locked by hoop bolts passing through the bolt holes.

3. The stabilizing fixture for a through-type plane truss according to claim 2, characterized in that: Reinforcing ribs are also provided between the connecting ears and the semicircular hoop plate.

4. A method for constructing a through-type plane truss, using the through-type plane truss stabilizing tooling according to claim 2 or 3, characterized in that: The specific steps include: a. Selection of rods: Determine the length L1 of the upper oblique support rod, the length L2 of the middle support rod, and the length L3 of the lower oblique support rod according to the height H1 of the truss. The selection principle is that the length of the upper oblique support rod and the lower oblique support rod are both 1.2 to 1.6 times the height H1 of the truss, and the length of the middle support rod matches the height of the truss; b. Selection of the clamp position: Set the top of the first clamp flush with the top of the column, and determine the distance H2 between the first clamp and the second clamp based on the length L1 of the upper oblique support rod, the length L2 of the middle support rod, the length L3 of the lower oblique support rod, and the horizontal distance L4 between the first hinged support on the truss and the second hinged support of the first clamp; c. Installation of clamp: Install the first clamp and the second clamp at the corresponding positions of the column; d. Installation of the middle support rod and the lower inclined support rod: Use the pin to hinge the middle support rod to one end of the lower oblique support rod, hinge the other end of the middle support rod to the first clamp, and hinge the other end of the lower oblique support rod to the second clamp in sequence; e. Hoisting the truss into place: Lift the truss so that it is supported on the top of the column through the ball joint support and the lifting wire rope bears the load; f. Installation of the upper inclined support rod: One end of the upper oblique support rod is hinged to the first hinged support on the truss, and the other end is hinged to the hinged end of the middle support rod and the lower oblique support rod; g. Unloading hoisting wire rope; h. Uninstallation of reinforcement device: After the main structure is installed, remove the truss and the upper oblique support rod, the first hoop and the middle support rod, the second hoop and the lower oblique support rod in sequence, and finally remove the first hoop and the second hoop.

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